Displaying 13 results of Pregnenolone Stable Isotopes Pregnenolone is a steroid hormone that plays a crucial role in the synthesis of other hormones such as estrogen and testosterone. Pregnenolone stable isotopes, such as deuterated and carbon-13 labeled versions, are used in medical research to study the metabolism and distribution of this hormone in the body. These isotopes offer a non-radioactive and safe way to analyze pregneolone in biological samples, which can improve our understanding of hormonal disorders and related diseases.